National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Ottumwa Regional Airport (KOTM)

Lat: 41.1°NLon: 92.44°WElev: 830ft.

Fair

74°F

23°C

Humidity 32%
Wind Speed SW 7 mph
Barometer 29.64 in (1003.2 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 9 Mar 2:53 pm CDT
Extended Forecast for

Martinsburg IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 76. Southwest wind around 10 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 47. Southwest wind around 5 mph becoming east in the evening.

    Low: 47 °F

    Clear

  • Tuesday

    Tuesday: A slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 69. Southeast wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.

    High: 69 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 39. Northeast wind around 10 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.

    Low: 39 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 48. Breezy.

    High: 48 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 55. Breezy.

    High: 55 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 39. Breezy.

    Low: 39 °F

    Chance Rain
    and Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 76. Southwest wind around 10 mph.
Tonight
Clear, with a low around 47. Southwest wind around 5 mph becoming east in the evening.
Tuesday
A slight chance of showers between 3pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 69. Southeast wind 5 to 10 mph becoming east in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 39. Northeast wind around 10 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 60%.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 48. Breezy.
Wednesday Night
Mostly clear, with a low around 27.
Thursday
Mostly sunny, with a high near 55. Breezy.
Thursday Night
A 30 percent chance of rain before 1am. Mostly cloudy, with a low around 39. Breezy.
Friday
Mostly cloudy, with a high near 52.
Friday Night
Mostly cloudy, with a low around 34.
Saturday
Mostly cloudy, with a high near 59.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 46. Breezy. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Martinsburg IA
 41.18°N 92.27°W (Elev. 810 ft)
Last Update:
1:26 pm CDT Mar 9, 2026
Forecast Valid:
3pm CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation